Universally-extensible tool-shaft.



Patented Sept. 22, 1908 J. STBINGASSBR. UNIVBRSALLY EXTBNSIBLE TOOL SKATI- In a... Incl-nun. a:

UNITED STATES PATENT orrron.

UNIVERSALLY-EXTENSIBIJ'J TOOL-SHAFT.

Specification of Letters Patent.

Patented Sept. 22, 1908.

Application filed November 5, 1907. Serial No. 400,765.

To all whom it may concern:

Be it knoun that I, Josnrn Ltnwro Srsixolissnn, a subject of the German Emperor, and resident of Mombach, near Mainz, Germany, have invented certain new and useful Improvements in Universally-Extensible Tool-Shafts, of which the following is a specification.

The object of my present invention relates to an extensibly mounted driving shaft for stripping-machines, grinding-machines, and polislringanachines for wood at the lower end of which the tool is removably fastened.

In the accompanying drawing in which I have illustrated my invention like letters of reference refer to like parts throughout the different views.

In said drawing, Figure 1 shows a vertical longitudinal section along the shaft. Fig. 2 shows a cross section on lines II of Fig. 1.

The shaft consists of the outer pipe casing a on the upper end of which a driving disk b is fastened. The lower end carries a threaded piece 0. Screwed unto said piece 0 is a coupling box (1 into which a shorter pipe 6 is soldered, said pipe being provided with longitudinal slots I also provide an inner pipe g serving as receptacle for the polishing substance. The upper end of the pipe g carries the filling pot it while its lower end is provided with a ball 2'. The member is is provided with a conduit coacting with a conduit l, the outer end of the former being provided with a tube In. A cock n regulates the feeding of the polishing substance towards the tool. Below the coupling box (Z I provide on the pipe 9 a handle 0, provided with ball bearings 19 and rotatable around the pipe 1. Mounted on the pipe 5 inside tube a is besides the ordinary guide I a catch 8 hav ing noses 1-. Between said catch and the box (I I provide a s )ring bearing it between two ball rings t. he tool clamp it having the ball '5 consists of a two parted casing providing the catch pins '21 moving in slots of the ball '5 and the fastening pins to for the tool provided with a bayonet lock. By means of an adjusting nut x the bayonet lock is secured after the mounting of the tool.

The operation of the shaft is as follows: At first the outer pipe easing a is quickly rotated by the disk I) by means of a rope or the like, while the inner pipe 9 is still in rest. After the tool has been fastened to the casing I: I draw the handle 0 downward whereby the spring at is pressed together by the catch s fixed to the iipe g and the noses r of the ring a are simu taneously guided by means of the sloping surfaces of the pipe 2 into the slotsf so forcing the pipe 9 and consequently the tool to rotate with the pipe (1. The handie 0 serves not only to operate the pipe 9 but also to effect a translatory motion of the shaft (1, said shaft being slidably mounted in a spherical sleeve .2 which is mounted for universal rotation in the frame member 1. By means of this arrangement 1 can com plete any longitudinal or transvcrsal motion of the tool over the working table. If I release the handle 0 the noses of the catch a are ressed out from the grooves f of the pipe 0 by springs u, whereby the pipe 9 is arrested; I can now exchange the tools without stopping the whole machine.

\Yhat. I claim as new and desire to secure by a United States Letters Patent, is:-

In a telescopic tool shaft, the combination of an outer pipe, an inner pipe and a medial pipe rotatable with said outer pipe and provided with grooves, a handle mounted on the inner pipe, :1 tool clamp on said pipe, 2 filling pot on said pipe, :1 ring on said pipe, keys on said ring, adapted to engage with grooves of the medial pipe, an extensor spring actuating said ring and a ball sleeve mounted on the outer pipe said sleeve being rotatably mounted in a frame member, substantially as described and for the purpose set forth.

In testimony whereof I have hereunto signed my name this 8th day of October .1907, in the presence of two subscribing witnesses.

JOSEPH LUDWIG STEINGKSSER.

Witnesses:

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WALTER .HAUSING. 

